958 



SCHIZOMYCETES 



Genus Cloaca Castellani and Chalmers, 1918. 

 Type Species. — Cloaca cloaccd Jordan, 1890. 



Remarks. — Two species are known, C. cloacce Jordan and C. 

 levans Wolffin, but they are not important in tropical medicine. 

 They may be recognized as follows: — 



Saccharose. 



Acid and Gas. No change. 



Cloacace. Levans. 



TRIBE BACTERIDIEyE Castellani and Chalmers. 

 Definition. — Bacillaceae growing well on ordinary laboratory 

 media, without endospores, and either fluorescent or chromogenic. 

 Type Genus. — Bacteridium Schroeter, 1872. 



Remarks. — Two distinct groups belong to this tribe — viz., the 

 fluorescent and the chromogenic — but we are only concerned with 

 the latter, to which the type genus belongs. 



Genus Bacteridium Schroeter, 1872. 



Definition. — Bacteridieae which are chromogenic. 



Type Species. — Bacteridium prodigiosum (Ehrenberg, 1838). 



Remarks. — Although we are not particularly concerned with this 

 genus as a whole in the tropics, still there is one species — Bacteridium 

 pyocyaneum Gessard, 1882, synonym Bacterium ceruginosum 

 Schroeter, 1872 — which is the organism of bluish-green pus. 



It is a common intestinal parasite in the tropics, and is moderately 

 common in pus in Ceylon, India, and the Anglo-Egyptian Sudan. 



It is a small motile rod, which becomes pleomorphic if grown on 

 media containing carbolic or boric acids. It only produces its 

 bluish-green pigment when grown aerobically. 



It produces acid, but no gas, in glucose, and no change in maltose, 

 dulcitol, or salicin. Litmus milk is rendered alkaline and not 

 clotted. 



TRIBE GRACILOIDE^ Castellani and Chalmers, 1918. 



Definition. — Bacillaceae growing very slowly and scantily on 

 ordinary and blood media, without endospores or capsules, neither 

 fluorescent nor chromogenic. 



Type Genus. — Graciloides Castellani. 



Genus Graciloides Castellani, 1917. 



Definition. — Graciloidece with the tribal characters. 

 Type Species. — Graciloides albojaciens Castellani, 1904. 

 Classification. — Two species have been so far described, which 

 may be recognized as follows: — 



A. Litmus milk rendered acid and clotted — Albojaciens. 



B. Litmus milk decolorized or peptonized — Tardus. 



